The earth is tilted on its axis by 23.5 degrees on its axis, therefore the poles receives the slanting rays of the sun, but the equator receives the same amount of sunlight directly and in concentrated manner, therefore the temperatures remains same throughout the year.There are only two times of the year when the Earth's axis is tilted neither toward nor away from the sun, resulting in a "nearly" equal amount of daylight and darkness at all latitudes. These events are referred to as Equinoxes. Countries, towns and cities located around the equator experience hot weather throughout the year. It is because the sun remains almost directly overhead every day. Countries that are further north or south of the equator experience a change in seasons, when hot weather follows cold weather.

Although the daytime length at the Equator remains 12 hours in all seasons, the duration at all other latitudes varies with the seasons. During the winter, daytime lasts shorter than 12 hours; during the summer, it lasts longer than 12 hours. As the sun rays fall directly on the equator first, the equator receives equal day and night throughout the year because it does not tilt in relation to the sun's location. At the equator, the sun is directly overhead at noon on these two equinoxes. The "nearly" equal hours of day and night are due to refraction of sunlight or a bending of the light's rays that causes the sun to appear above the horizon when the actual position of the sun is below the horizon. Equator receives almost the same amount of sunlight throughout the year. The earth is tilted on its axis by 23.5 degrees on its axis, therefore the poles receives the slanting rays of the sun, but the equator receives the same amount of sunlight directly and in concentrated manner, therefore the temperatures remains same throughout the year. On and near the equator, sunlight comes from almost directly above every day all year round; the equator therefore has a stable, daytime temperature the whole year. The climate near the equator is usually hot and humid because the sun's rays hit the earth directly at this latitude. The seasons are also less pronounced near the equator because the earth's tilt is not as pronounced. Near the equator, there is little temperature change throughout the year, though there may be dramatic differences in rainfall and humidity. The terms summer, autumn, winter and spring do not generally apply. At the equator, the sun is directly overhead at noon on these two equinoxes. The "nearly" equal hours of day and night are due to refraction of sunlight or a bending of the light's rays that causes the sun to appear above the horizon when the actual position of the sun is below the horizon.

Every location on Earth experiences an average of 12 hours of light per day but the actual number of hours of daylight on any particular day of the year varies from place to place. Locations around Earth's equator only receive about 12 hours of light each day. Although the daytime length at the Equator remains 12 hours in all seasons, the duration at all other latitudes varies with the seasons. During the winter, daytime lasts shorter than 12 hours; during the summer, it lasts longer than 12 hours.The pattern shows that the number of hours of daylight per day is higher in the summer and lower in the winter. This pattern is caused by the tilt of Earth's axis. At some points in Earth's orbit around the Sun, the tilt causes one hemisphere to lean toward the Sun while the other one is tilted away. The warmth of direct rays causes spring and then summer in that part of the globe. When the Northern Hemisphere of the Earth is leaning away from the sun, it receives more indirect sunlight. The cooling effects of more indirect sunlight cause autumn and winter. For all practical purposes, the length of day and night for any location on the equator is constant throughout the year at about 12 hours. Because Earth is a sphere, not all part of the Earth receives the same amount of solar radiation. More solar radiation is received and absorbed near the equator than at the poles. Near the equator, the Sun's rays strike the Earth most directly, while at the poles the rays strike at a steep angle. But Earth's surface isn't heated evenly. The sun's rays are the most concentrated around the equator. Moving north or south of the equator, the sun's rays are spread over a larger area, so each square meter of Earth's surface receives less solar energy. The earth is tilted on its axis by 23.5 degrees on its axis, therefore the poles receives the slanting rays of the sun, but the equator receives the same amount of sunlight directly and in concentrated manner, therefore the temperatures remains same throughout the year. On and near the equator, sunlight comes from almost directly above every day all year round; the equator therefore has a stable, daytime temperature the whole year. Due to the spherical shape of the Earth, sunlight falls on different parts at different angles. Direct and focused sun rays falls on the equator and hence, the regions here are hotter and warmer.